CVE-2024-7187Network attack vector

Authenticated code execution via oversized module filename

Published Jul 29, 2024 · Updated Aug 1, 2024

Buffer overflow in TOTOLINK A3600R 4.1.2cu.5182_B20201102 allows remote authenticated users to execute code via a crafted File value. UploadCustomModule in /cgi-bin/cstecgi.cgi handles the File request-body field without enforcing the destination buffer's capacity, allowing an oversized value to overwrite adjacent memory. Access to the authenticated management interface is required, and successful exploitation can execute code or crash the router.

CVSS severity8.8
High
EPSS probability1.15%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Buffer overflow in TOTOLINK A3600R 4.1.2cu.5182_B20201102 allows remote authenticated users to execute code via a crafted File value. UploadCustomModule in /cgi-bin/cstecgi.cgi handles the File request-body field without enforcing the destination buffer's capacity, allowing an oversized value to overwrite adjacent memory. Access to the authenticated management interface is required, and successful exploitation can execute code or crash the router.

The record

CVE
CVE-2024-7187
Published
Jul 29, 2024
Updated
Aug 1, 2024
Vendor
TOTOLINK
Product
A3600R
Classifications
CWE-120, T1190
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Jul 29, 2024CVE publishedPublication date reported by the CVE source.
  2. Aug 1, 2024Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=4.1.2cu.5182_B20201102

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

TOTOLINK · A3600Rversion=4.1.2cu.5182_B20201102
TOTOLINK · A3600R Firmwareversion=4.1.2cu.5182_b20201102

Published CVSS scores

8.8VulDBCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
9.0VulDBAV:N/AC:L/Au:S/C:C/I:C/A:C
8.8VulDBCVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
8.8NIST NVDCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
8.7VulDBCVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-120Buffer Copy without Checking Size of Input ('Classic Buffer Overflow')
T1190Exploit Public-Facing Application

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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